Floating- and revolving derrick



STATES ATEN OFFICE.

FLOATING- ANI) REVOLVING- DERRICK.

Specification of Letters Patent No. 22,811, dated February 1, 1859'.

To all whom 'it 'may concern:

Be it known that I, EDWARD JONES, of Brooklyn, Kings county, and State of New York, have invented a new and useful Floating and Revolving Derrick; and I do hereby declare that the same is described and represented in the following specification and drawings. Y

To enable others skilled in the art to make and use my invention I will proceed to describe its construction and operation referring to the drawings in which the same letters indicate like parts in each of the figures.

Figure l, is a plan or top view of the floating revolving derrick. Fig. 2, is a section representing the scow cut lengthwise through the center.

The nature of my improvements in derricks consists in making the turntable or frame which carries the derrick to turn `on the bottom of the scow below its deck. Also in supporting the turntable or frame which carries the derrick, by means of a circle and wheels at or about the height of the deck of the scow which carries it. l

In the accompanying drawings A is the bottom of the scow B, B, the sides, C, C, the ends, and D the deck of said scow. The bottom of this scow is made double at A', for the wheels E, to travel on which support the circular turntable F, provided with a pivot or center pin F, arranged to turn in bottom A, shown in Fig. 2. The turntable F, is firmly fastened to the upper turntable G, by the standards I-I, H, which support the table G, right over the table F, as shown in the drawing Fig. 2.

There is a circular opening in the deck D, surrounded by the circle I, which is iirmly fastened to the deck for the wheels J, J, J, to roll against which turn on pins in the underside of the turntable G, to support steady and hold it right over the turntable F, as shown in the drawing Fig. 2. There is a score inthe edge of the table G, for the' rope K, from the capstan L, arranged on the deck D, to turn the tables F, and G, when required. The circle M, is fastened to the circle I, and made to project over the space between the table G, and circle I. The y sheers N, N, are firmly fastened to the turntable G, and their upper ends are also firmly fastened together, and the bolt P, is made to pass through them to which bolt the chains Q, Q, are connected to stay the sheers, the lower ends of these chains being fastened to the turntable G.

R, R, are two derrick poles having their' lower ends hinged to the table G, and their upper ends firmly fastened together; they are also connected together by the bars S, and braced by the braces T, as shown in Fig. l, and the pin U, passes through their outer ends, which pin is connected to the bolt P, by the chains V, V, to hold up lthe end of the derrick. The pin U, also holds the link W, for the tackle X. The rope from this tackle passes through the table G, to the windlass barrel Y supported by hangers from the underside of the table G, so that the windlass is carried round by the table.' The windlass barrel Y, may be turned by a steam engine or horse power arranged on the table F, to turn with it; and if a. steam engine is used it may be uncoupled from the windlass, and coupled to a screw to propel the scow. Instead of turning` the l, derrick by the capstan as described a segment gear may be applied to the circle I, and a pinion arranged in proper bearings in the edge of the table G, to turn it which pinion may be arranged to connect with the steam engine or horse power, whenever it is desirable to use it to turn the table and derrick.

I have described the wheels J, J, as rolling against the edge of the circle Ig'but the wheels may be arranged on pins in the circle I, so as to roll against the edge of the table if preferred that way.

The advantages of my improved derrick may be enumerated as follows, viz, The lower turntable is arranged to turn on the bottom of the scow, and carry the engine or horsepower, so that much of the weight of the derrick is below the deck of the scow and close to its bottom; thereby enabling a scow of a given length of beam to raise a heavier article on the derrick than they have heretofore done. The derrick may turn one or more times around in either direction; and carry the engine or other power used in hoisting with it, thereby preventing any derangement of the rigging. It can be built cheaper, and worked easier than those heretofore made.

I believe I have described and represented my improved derrick so as to enable any person skilled in the art to make and use it,

I will now state What I desire to secure by table or frame of the derrck, by means of a Letters Patent, to Wit: circle and Wheels substantially as described.

1. I claim the arrangement of the turntable or frame Which carries the derrok, EDWARB JONES 5 when placed on the bottom of tbe seoW or Witnesses:

below the deck substantially as described. EDWIN FERRY,

2. I also claim supporting the upper turn- THos. I". ROWLAND. 

